idUnitframes:RegisterDB('idUnitframesDB')
idUnitframes:RegisterDefaults('account', {
    Position = {
        player = {p1='BOTTOM', p2='BOTTOM', pr='UIParent', x=0, y=140},
        pet    = {p1='BOTTOM', p2='BOTTOM', pr='UIParent', x=0, y=0},
        target = {p1='BOTTOM', p2='TOP', pr='idUnitframesplayer', x=0, y=1},
        party1 = {p1='BOTTOM', p2='BOTTOM', pr='UIParent', x=0, y=0},
        party2 = {p1='BOTTOM', p2='BOTTOM', pr='UIParent', x=0, y=0},
        party3 = {p1='BOTTOM', p2='BOTTOM', pr='UIParent', x=0, y=0},
        party4 = {p1='BOTTOM', p2='BOTTOM', pr='UIParent', x=0, y=0},
    }
})

...

function idUnitframes:loadPosition(Unit)
    if not self.db.profile.Position then
        self.Frames[Unit]:SetPoint(self.db.account.Position[Unit].p1, self.db.account.Position[Unit].pr, self.db.account.Position[Unit].p2, self.db.account.Position[Unit].x, self.db.account.Position[Unit].y)
        return
    end

    self.Frames[Unit]:SetPoint(self.db.profile.Position[Unit].p1, self.db.profile.Position[Unit].pr, self.db.profile.Position[Unit].p2, self.db.profile.Position[Unit].x, self.db.profile.Position[Unit].y)
end

function idUnitframes:savePosition(Unit)
    local Frame = self.Frames[Unit]
    local Scale = Frame:GetEffectiveScale()
    local x,y = Frame:GetLeft(), Frame:GetTop()

    local x = Frame:GetLeft() * Scale
    local y = Frame:GetTop() * Scale

    self.db.profile.Position[Unit].x = x -- line 519
    self.db.profile.Position[Unit].y = y
end